The Google Assistant learns quickly but does not understand everything yet.
To ensure that the Google Assistant can understand you easily, we recommend keeping names simple when you create groups and rooms, for example. To keep it simple, we recommend not combining too many other languages.
Ambient noise or other interference can also prevent the Google Assistant from hearing you properly (see article on interference).
If you experience problems with many voice commands, this may be due to the WiFi network in your home. In that case, see the article about recommended network settings and how to split the network bands.
If the problem is with a specific command that is (no longer) understood, first try to achieve the desired result using a work-around. If the Google Assistant: Does not understand ‘Hey, Google, play Radio 1’, try saying ‘Hey, Google, play BBC One on TuneIn’, for example.
If you are temporarily unable to play a certain radio station, then in some cases, if you know the FM frequency, you can ask the Google Assistant to play that FM frequency. A temporary solution could also be to cast music to your speaker or speaker group through the TuneIn-app or other apps witch support Google casting.
After every Google firmware upgrade, some voice commands may have changed or may be interpreted a little differently. If you encounter specific commands that do not work properly (any longer) in certain aspects but you are not experiencing any other problems streaming music within your network, then you can give feedback or submit a feature request under your profile in the Google Home-app.
GOOD TO KNOW: With a free Spotify account, you only can play artists using voice commands. With a Premium Spotify account, you can request a specific song in addition to requesting the artist.